Mt. Gox Account Compromised. Huge Sell-off.

UPDATE: MTGox Database compromised. That password is no longer secure. Change them!

From their blog:

Huge Bitcoin sell off due to a compromised account - rollback

The bitcoin will be back to around 17.5$/BTC after we rollback all trades that have happened after the huge Bitcoin sale that happened on June 20th near 3:00am (JST).

Service should be back by June 20th 10:00am (JST, 01:00am GMT) with all the trades reversed and accounts available.

The Canadian exchange cavirtex did not collapse, and AFAIK does not need a rollback.